Electromagnetically actuated multi-leaf collimator
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United States of America Patent
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Sep 13, 2016
Grant Date -
Aug 28, 2014
app pub date -
Feb 19, 2014
filing date -
Feb 26, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A multi-leaf collimator with electromagnetically actuated leaves. The multi-leaf collimator includes a plurality of leaves, a leaf guide configured to support the plurality of leaves, and a plurality of magnets. Each leaf includes a blocking portion that is radio opaque, a drive portion connected to the blocking portion, and a coil embedded in the drive portion. The coil is operatively connected to an electrical current source to generate a first magnetic field. The first magnetic field interacts with the magnetic field generated by the magnet to thereby move the leave to a desired state. The leaves have the capability of moving at speeds of 50 cm/s up to and higher than 1 m/s.
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